2014 MLB Relative Power Index (RPI),as of the games of July 30,2014

MLB RPI Rankings
RK	TEAM	RPI	W	L	PCT	SOS	PWR	RS	RA	EXPW-L	EXPWP
1	Oakland Athletics	.531	66	41	.617	.502	1	535	373	72-35	.673
2	Los Angeles Angels	.527	63	43	.594	.505	2	517	428	63-43	.593
3	Baltimore Orioles	.521	60	46	.566	.506	7	452	421	57-49	.535
4	Detroit Tigers	.517	58	46	.558	.503	3	487	446	57-47	.544
5	Toronto Blue Jays	.516	59	50	.541	.507	13	506	463	59-50	.544
6	St. Louis Cardinals	.509	56	50	.528	.503	10	387	389	53-53	.497
7	Los Angeles Dodgers	.509	61	47	.565	.490	6	453	394	61-47	.569
8	Washington Nationals	.509	58	47	.552	.494	4	438	366	62-43	.589
9	Milwaukee Brewers	.508	60	49	.550	.493	5	471	442	58-51	.532
10	New York Yankees	.506	55	52	.514	.504	12	429	459	50-57	.466
11	Pittsburgh Pirates	.506	57	50	.533	.497	11	445	442	54-53	.503
12	Kansas City Royals	.506	54	52	.509	.505	16	420	421	53-53	.499
13	Seattle Mariners	.506	55	52	.514	.503	15	408	356	61-46	.568
14	Cleveland Indians	.503	53	54	.495	.506	18	474	469	54-53	.505
15	San Francisco Giants	.503	58	50	.537	.492	8	419	398	57-51	.526
16	Tampa Bay Rays	.503	53	55	.491	.507	14	421	425	53-55	.495
17	Atlanta Braves	.502	58	50	.537	.491	9	414	393	57-51	.526
18	Cincinnati Reds	.500	53	54	.495	.501	17	401	392	55-52	.511
19	New York Mets	.495	52	56	.481	.500	21	423	409	56-52	.517
20	Miami Marlins	.494	53	54	.495	.493	19	442	460	51-56	.480
21	Chicago White Sox	.493	52	56	.481	.497	20	467	482	52-56	.484
22	Boston Red Sox	.490	48	60	.444	.506	22	412	467	47-61	.438
23	Minnesota Twins	.490	48	58	.453	.502	24	432	474	48-58	.454
24	Houston Astros	.487	44	64	.407	.514	29	419	518	43-65	.396
25	San Diego Padres	.482	48	59	.449	.493	23	338	366	49-58	.460
26	Philadelphia Phillies	.482	47	61	.435	.497	25	416	484	46-62	.425
27	Texas Rangers	.481	43	65	.398	.508	30	437	554	41-67	.384
28	Arizona Diamondbacks	.478	47	61	.435	.492	26	430	502	46-62	.423
29	Colorado Rockies	.474	44	63	.411	.495	28	505	557	48-59	.451
30	Chicago Cubs	.474	44	62	.415	.493	27	409	457	47-59	.445

Glossary

• W: Wins
• L: Losses
• PCT: Winning percentage
• RPI: Relative Power Index+
• SOS: Strength of schedule

• PWR: ESPN Power Ranking
• RS: Runs scored
• RA: Runs allowed
• EXW-L: Expected W-L*
• EXWP: Expected winning percentage*

+The basic formula is 25% team winning percentage, 50% opponents' average winning percentage, and 25% opponents' opponents' average winning percentage.
*ExW-L and ExWP are derived from Bill James' Pythagorean theorem of baseball: Runs scored [squared] / (Runs scored [squared] + runs allowed [squared]). This formula was designed to relate a team's runs scored and runs allowed to its won-lost record.